The effect of BCl3 pretreatment on the etching of AlN in Cl2-based plasma
Keyword(s):
AbstractThe effect of BCl3 and BCl3/Ar pretreatment on Cl2/Ar and Cl2/Ar/BCl3 dry etching of AlN is investigated using inductively coupled plasma reactive ion etching. The native AlN oxide can be effectively removed by a short exposure to BCl3 or BCl3/Ar plasma. Compared to the chlorine based plasma etching, BCl3/Ar is found to have the highest etch rate for both AlN and its native oxide. Following removal of the native oxide, Cl2/Ar/BCl3 plasma etching with 15% BCl3 fraction results in a high etch rate ˜ 87 nm/min and modest increases in the surface roughness.
2013 ◽
Vol 740-742
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pp. 825-828
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Keyword(s):
2007 ◽
Vol 124-126
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pp. 503-506
2017 ◽
Vol 35
(4)
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pp. 042003
2014 ◽
Vol 14
(10)
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pp. 8074-8078
2004 ◽
Vol 43
(1)
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pp. 82-85
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